ISL6244CR-T

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The ISL6244CR-T is a high performance DC/DC controller with a wide range of application fields. Its robust, low-side MOSFET driver with improved charge pump ensures stable operation of the whole system with a wide range of input voltage and output current. The on-board four phase filter allows for better control of between phase current, providing improved accuracy and power efficiency in the application. Its overvoltage, undervoltage and current limit protections make it reliable for providing overdraw and overcharge protections for the power supplies.

In applications across various industries including automotive, industrial, medical and consumer, the ISL6244CR-T efficiently supplies power to a wide range of systems. It can be used to provide efficient regulation of power supplies in high powered motor applications, providing motor speed control and boosting the power efficiency. It can also be implemented to provide enhanced efficiency in light-emitting diode (LED) lighting systems by effectively regulating the current output to LED strings.

As a DC/DC controller, the ISL6244CR-T has the ability to switch between two sets of voltage ranges. This allows it to provide both voltage and current regulation to the application. Additionally, the output current can be fully integrated with the ISL6244CR-T’s current limiting feature, providing safe and reliable operation. The ISL6244CR-T also has the ability to adjust the power factor correction of the input current, allowing for improved efficiency and helping to meet power saving requirements in many applications.

The device’s working principle consists of a two stage operation, where the first stage is the control loop and the second stage is the power stage. In the control loop, the ISL6244CR-T samples the input voltage and current at low frequency and then calculates the average. It then uses a filter to smooth the measured values before the value is compared against the reference voltage. The result of this comparison is then used to set the pulse width modulation (PWM) duty cycle. This sets the output current, which is then compared against the reference current. If the output current is higher or lower than the reference current, the pulse width modulation (PWM) duty cycle is adjusted accordingly.

In the power stage, the ISL6244CR-T uses a power MOSFET to switch current from the input to the output of the power supply. The MOSFET is driven with a high voltage pulse, which is determined by the output of the control loop. By controlling the PWM duty cycle, the ISL6244CR-T is able to regulate the output current in order to keep it within set limits. It also adjusts the voltage at its output by adjusting the input voltage. This is done by utilizing its low-side MOSFET driver, which ensures a stable operation.

The ISL6244CR-T is a reliable and versatile DC/DC controller which can be used in a wide range of applications, providing improved accuracy and power efficiency. Its efficient output current control and adjustable power factor correction makes it suitable for a variety of applications, from motor speed control to LED lighting systems.

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